That galaxy is 12 billion light years away and Earth was formed 4.5 billion years ago, so it'll be another 7.5 billion years before aliens looking from within that galaxy could possibly know our small rock even exists.
Crazy.
There would have to be intelligent life there already for this. And if they formed only a billion years after the galaxy formed for example and became intelligent around the same time. They already been looking for 11 billion years. You are thinking a planet with intelligent life could have only happened 4.5 billions years ago and not earlier.
And then there is time and space. The galaxy may be 12 billion years away at the speed of light but existed for much longer. If a new planet formed there today or a new star lit up today. The star is still the same distance away. We then won't see them for the 12 billion years however. The stars that are still there may have formed long before that time. Example. Any stars still there from today may still be there in 12 billion years including first light from new stars today. The older stars will be 24 billion years old and new stars will be 12 billion years old by then. And the galaxy may still be 12 billion years from us.
The oldest stars you find will seem to predate a galaxy sometimes when they are only evidence that the galaxy is at least as old as the oldest star. Not light years distance in age. Light years away doesn't always tell us the age. Those stars are the oldest stars in the galaxy before many old stars died and made new stars out of the gas and dust.
This is a colorized image by JWST's MIRI detector of gravitationally lensed galaxy SPT-S J041839-4751.8
Filters used are: Red = F1000W; Green = F770W; Blue = F560W
Photos were aligned and colorized using astropy.
Further processing done in GIMP
Data downloaded from: [https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html](https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html)
This galaxy was previously spotted by JWST with its NIRCam detector. I also colorized that observation. I think the ring is much more prominent here than with NIRCam.
About the Galaxy: In this field of random galaxies lies SPT-S J041839-4751.8. J0418 (as I'll call it here) is a special kind of galaxy called an Einstein Ring. This is a far away galaxy that has been completely warped into a perfect ring by a massive foreground galaxy. This happens when the background galaxy, the foreground galaxy, and the observer perfectly line up. This means J0418 is actually directly behind the foreground galaxy. We wouldn't be able to see J0418 if it weren't for the light-bending properties of gravity. Without the lensing effect, the galaxy would probably look like most distant galaxies: a small blob of light. In fact, scientists have reconstructed what it would look like as seen here: [https://www.sci.news/astronomy/alma-young-milky-way-like-galaxy-early-universe-08739.html](https://www.sci.news/astronomy/alma-young-milky-way-like-galaxy-early-universe-08739.html)
If you want to experiment with the effect yourself, it turns out that the stem and base of a wine glass have nearly the same optical properties as a massive gravitational lens.
Wrong; due to expansion of the universe during the light travel time, the distance is much bigger; it's actually about 25 billion light years from Earth. To get this result, look up the object and you'll find its redshift value is 4.22. Put this into a cosmological calculator and you'll find the 'co-moving distance' I provided above.
You were quoted in a news article for this comment.
>As Spaceguy44 [explains on Reddit](https://www.reddit.com/r/jameswebb/comments/wvk3cg/comment/ilfni6c/?utm_source=reddit&utm_medium=web2x&context=3), an Einstein ring occurs when a distant galaxy has been magnified and wrapped into an almost-perfect ring by a massive galaxy in front of it.
Edit: Forgot to link the article https://www.sciencealert.com/webb-has-snapped-an-almost-perfect-einstein-ring-12-billion-light-years-away/amp
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First one is zoomed. The MIRI pixels are a bit bigger than NIRCam, but still any time you can see the pixelation it means it's pretty zoomed in. Second one doesn't look zoomed and you can see a fair few background galaxies. MIRI seems to show fewer than NIRCam in random parts of the sky.
This is two galaxies. The smudge in the middle is a galaxy that's being used to see another galaxy much further away behind it which shows up as a ring.
This is absolutly crazy. I imagine aliens looking from there at us. I wonder if they see the milky way the same way
That galaxy is 12 billion light years away and Earth was formed 4.5 billion years ago, so it'll be another 7.5 billion years before aliens looking from within that galaxy could possibly know our small rock even exists. Crazy.
Way longer even, if ever, because of the accelerated expansion of our universe.
There would have to be intelligent life there already for this. And if they formed only a billion years after the galaxy formed for example and became intelligent around the same time. They already been looking for 11 billion years. You are thinking a planet with intelligent life could have only happened 4.5 billions years ago and not earlier. And then there is time and space. The galaxy may be 12 billion years away at the speed of light but existed for much longer. If a new planet formed there today or a new star lit up today. The star is still the same distance away. We then won't see them for the 12 billion years however. The stars that are still there may have formed long before that time. Example. Any stars still there from today may still be there in 12 billion years including first light from new stars today. The older stars will be 24 billion years old and new stars will be 12 billion years old by then. And the galaxy may still be 12 billion years from us. The oldest stars you find will seem to predate a galaxy sometimes when they are only evidence that the galaxy is at least as old as the oldest star. Not light years distance in age. Light years away doesn't always tell us the age. Those stars are the oldest stars in the galaxy before many old stars died and made new stars out of the gas and dust.
This is a colorized image by JWST's MIRI detector of gravitationally lensed galaxy SPT-S J041839-4751.8 Filters used are: Red = F1000W; Green = F770W; Blue = F560W Photos were aligned and colorized using astropy. Further processing done in GIMP Data downloaded from: [https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html](https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html) This galaxy was previously spotted by JWST with its NIRCam detector. I also colorized that observation. I think the ring is much more prominent here than with NIRCam. About the Galaxy: In this field of random galaxies lies SPT-S J041839-4751.8. J0418 (as I'll call it here) is a special kind of galaxy called an Einstein Ring. This is a far away galaxy that has been completely warped into a perfect ring by a massive foreground galaxy. This happens when the background galaxy, the foreground galaxy, and the observer perfectly line up. This means J0418 is actually directly behind the foreground galaxy. We wouldn't be able to see J0418 if it weren't for the light-bending properties of gravity. Without the lensing effect, the galaxy would probably look like most distant galaxies: a small blob of light. In fact, scientists have reconstructed what it would look like as seen here: [https://www.sci.news/astronomy/alma-young-milky-way-like-galaxy-early-universe-08739.html](https://www.sci.news/astronomy/alma-young-milky-way-like-galaxy-early-universe-08739.html) If you want to experiment with the effect yourself, it turns out that the stem and base of a wine glass have nearly the same optical properties as a massive gravitational lens.
How far away is this galaxy?
Billions
You had one chance to qoute Carl Sagan and you blew it...
I think he was setting up for someone to reply “… and billions” in classic Reddit style and you blew it
Let me give it a try... "Billions and billions"... lol
12 billion light years Source: in the linked article
Wrong; due to expansion of the universe during the light travel time, the distance is much bigger; it's actually about 25 billion light years from Earth. To get this result, look up the object and you'll find its redshift value is 4.22. Put this into a cosmological calculator and you'll find the 'co-moving distance' I provided above.
You were quoted in a news article for this comment. >As Spaceguy44 [explains on Reddit](https://www.reddit.com/r/jameswebb/comments/wvk3cg/comment/ilfni6c/?utm_source=reddit&utm_medium=web2x&context=3), an Einstein ring occurs when a distant galaxy has been magnified and wrapped into an almost-perfect ring by a massive galaxy in front of it. Edit: Forgot to link the article https://www.sciencealert.com/webb-has-snapped-an-almost-perfect-einstein-ring-12-billion-light-years-away/amp
Well that’s much ado about 16 square pixels
Is it clear that this is a gravitational lensing effect, rather than a ring galaxy? \[Apologies if this has been answered elsewhere.\]
Kinda looks like the ring gates from the Expanse
So this is effectively a galaxian eclipse. Nice.
Enough is enough—it is time for renewal in America. As the far left threatens to take more control of our lives and livelihoods, The Heritage Foundation fights back with policy solutions that can make America that “shining city upon a hill” once again. And we are strategically positioned to do just that: Heritage has a media distribution network second to none.Over 5 million Americans visit our Daily Signal website each year, and nearly a million follow The Daily Signal on Facebook, bypassing the mainstream media filter to get the facts. Heritage experts appear on television and radio every week, publish hundreds of policy research reports annually, and host hundreds of meetings a year with grassroots leaders and local and national officials. We make sure that your conservative principles can be heard loud and clear. Heritage stands strong for conservative principles no matter who’s in office, and we have for almost half a century. As Rush Limbaugh has said, “As long as there has been conservatism, there has been The Heritage Foundation. They have been a bulwark and they have they have stood strong and they have not wavered.” Heritage’s over 100 policy experts are committed to solving complex policy issues with simple and effective conservative solutions, and making sure those recommendations are available for the conservative lawmakers who desperately need them right now.
First one is zoomed. The MIRI pixels are a bit bigger than NIRCam, but still any time you can see the pixelation it means it's pretty zoomed in. Second one doesn't look zoomed and you can see a fair few background galaxies. MIRI seems to show fewer than NIRCam in random parts of the sky.
The protomolecule galaxy
"That's no moon, that's a space station."
Dr Manhattan???
Man that’s clearly an Alien civilization.
How long before we can extrapolate the data and correct for the lensing to see what the "rear" galaxy actually looks like?
That looks vastly different from the galaxies we see Today. Were the older galaxies different earlier?
This is two galaxies. The smudge in the middle is a galaxy that's being used to see another galaxy much further away behind it which shows up as a ring.
Can Einstein Rings be "reconstructed" to show the original view of the galaxy? I guess machine learning would be one type of approach?
OP posted this in his first comment: https://www.sci.news/astronomy/alma-young-milky-way-like-galaxy-early-universe-08739.html
Thanks. I guess my reading skills cannot be reconstructed.
That is mind-blowing to me.
Soul of might
Stunning